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Suppose that you were asked to help design a survey of adult city residents in order to estimate the proportion who would support a sales tax increase. The plan is to use a stratified random sample, and three stratification schemes have been proposed.
Scheme 1: Stratify adult residents into four strata based on the first letter of their last name (A-G, H-N, O-T, U-Z).
Scheme 2: Stratify adult residents into three strata: college students, nonstudents who work full time, nonstudents who do not work full time.
Scheme 3: Stratify adult residents into five strata by randomly assigning residents into one of the five strata. Which of the three stratification schemes would be best in this situation? Explain.
Explain the structure of the plasma membrane that makes it semi-permeable - how simple diffusion and facilitated diffusion occur in our body
q1. most membrane proteins including con-a receptor can be solubilised by treating cell membranes with a non-ionic
Two genes, designated A and B, are located 10 mu from each other. A third gene, designated C, is located 15 mu from B and 5 mu from A. A parental generation consisting of AAbbCC and aaBBcc individuals were crossed to each other.
Katie is getting married this summer and wants to start having children as soon as next year. She decides she is going to start taking vitamins
Relate the events of muscle contraction to cellular respiration. How does the structure of abone make it strong yet lightweight? What is difference between mitosis and meiosis.
Draw a diagram of the single-neuron perceptron you would use to solve this problem. How many inputs are required? ii. Draw a graph of the data points, labeled according to their targets. Is this problem solvable with the network you defined in par..
What does it mean when we say that the two strands of DNA in the double helix are antiparallel? What would the end of the double helix look like if he strands were parallel?
Photosynthesis: Tree Huggers- In your own words, what is a carbon sink? What is the role of forests in climate change? In other words, how can forest destruction be linked to increases in CO2? Limit this answer to 250 words
Certain chemicals block ATP synthesis by allowing protons and other ions to "leak across membranes," disrupting the charge and protein gradients established by electron flow through an electron transport chain.would this observation support the che..
Which of the following is not a means of decreasing stroke volume? A. loss of 3 pints of blood B.allergic reaction to a bee sting C.increasing aldosterone secretion D.dehydration E.severe vomiting
Suppose that you have discovered two different transposable elements (A and B) in yeast and you inserted an intron into each of the elements. Following transposition of each transposable element, you examine the transposed elements to determine if..
Discuss the most important SIMILARITIES & DIFFERENCES between DNA repication and RNA trnascreption?
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